市域(郊)铁路最小线间距及曲线加宽方法研究

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Abstract Research purposes: With the acceleration of China's urban integration construction process, the demand for urban (suburban) railway construction is gradually increasing, and the urban (suburban) railway has strict requirements in economy, practicality and functionality. Therefore, this paper studies the minimum line spacing, widening value and widening method of urban (suburban) railway, so as to optimize the line conditions and make rational use of limited resources.
Research conclusions:(1) The minimum line spacing of type A and B vehicles in the city does not need curve widening; The widening values of C and D vehicles in the city area are recommended to be selected according to the calculation results; The minimum line spacing of CRH2 train is recommended to be 4.2 m. (2) It is recommended to select the curve widening value of urban (suburban) railway according to the widening calculation results. (3) In the concentric circle widening method with constant line spacing, the curve radius is inversely calculated by rounding ten according to the transition curve, so that the most economical and practical circular curve parameters can be obtained and unique; This method is not affected by deflection angle. (4) The non-concentric circle widening method with variable line spacing is used according to the limiting conditions and MATLAB program to calculate the radius range of the second-line curve, and the most economical and practical curve elements are selected according to different working conditions; It is found that large deflection angle and small curve radius will reduce the value range of curve radius; The maximum line spacing of this method appears on the transition curve near YH (or near HY). (5) The research results have reference value for supplementing the Code for Design of Suburban Railway and reasonably optimizing resources.

Key words： urban (suburban) railway minimum line spacing curve widening concentric circles non-concentric circles

Received: 13 August 2021

PACS:

U212.31

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Cite this article:

YU Baoxing. Research on the Minimum Line Spacing and Curve Widening Method of Urban (Suburban) Railway[J]. Journal of Railway Engineering Society, 2022, 39(9): 93-99.

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https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2022/V39/I9/93

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